Rotary hoof-trimmer.



J. S. WOODS.

ROTARY HOOP TRIMMER. APPLICATION FILED JUNE 1, 1914.

Patented Jan. 19, 1915.

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enrich.

' JosE'Pn serrate wjccns, or VALE, OREGON.

To all whom it may concern iii Be it known that I, JOSEPH S. Woo'ns, a citizen of the United States, and a resident ofVale, in the county of Malheur and State of Oregon, have invented a new and Improved Rotary Hoof-Trimmer, of which the following is a full, clear, and exact description.

My invention relates to a revolubly driven tool for use in farrie'ry, in trimming hoofs, the tool comprising a spindle to carry the trimming tool or tools, and means for establishing a driving-connection between the spindle and a flexible shaft of rotary drive means.

Objects of the invention are to provide an improved means for establishing connection with-the drive shaft; to provide for interchangeably securing various tools to the spindle; to provide improved bearings and thorough lubrication and to generally-improve devices of the indicated character with a view to promote. strength and efficiencyas well as simplicity of adjustment and control. r

. Theinvention will be particularly explainedin the specific description following.

Reference is to be had to the accompanyin-g drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views. i g

Figure 1 is a longitudinal sectional elevation of a trimming tool embodying my in vention; Fig. 2 is a fragmentary side elevation of the rear portion'of the tool, indicating the manner ofemanually shifting the clutch for the drive to make or break the driving connection with the spindle; Fig. 3 1s a front end view; Fig. i s a cross section through the tool, near the rear end, showing the clutch-actuating means; and Figs. 5 and 6 are side. elevationscf tools which may be interchangeably employed with advantage.

In constructing a practical embodimentof my invention "as ill-ustrate'd, a tubular body a .10 is provided with {a central bore in which a spindlellis adapted-to turn. To eifect a bearing for the spindle at one end andenl'ar "ement or collar 12 is formed thereon having a ball groove 13 for receiving bearingballs 14. 1A nut 15 on the body 10 has an annular. inwardly projecting flange .16

defining a bore of less diameter than the body of the nut formed withca cone bearing Specification of Letters Patent.

nor-Aer HOOP-TRIMMER.

Patented Jan. 19, 1915.

Application filed June 1, 1914. Serial N 0. 842,058.

17 adjacent to the annular groove 13. An opposed cone bearing 14% is produced on the end of the tubular body 10 and forms with the core 17 and groove 13 a ball race for the balls 14, A look nut 18 on the body at the lnner end of the cone nut 15, serves to lock the latter. .On the spindle 11 is formed a tubular head 19 adapted to slidably receive on 1ts exterior a tubular tool 20, or 20 hereinafter referred'to. A tongue and groove connection is established betweenthe head'19 and the tool 20, present example, -a key 21 on the exterior of the head 19, and a corresponding keyway 22 in the tool 20 at the interior. It will be obvious that the key and keyway may be reversed, but itwill be more economical to produce the keyway in the tool, since when the latter is worn out and discarded, the keyway in the discarded tool will represent less expense than would a key.

The inward movement of the tubular tool 20 is limited by a flange 23 on the spindle at the base of the head 19 adjacent to the cone nut 15. In order to positively retain the tubular tool 20 in position on the head 19, the latter is provided with spring latches 24 in the form of plate springs secured as by screws 25 or the like, to the said head, at the interior of the latter. The latches 24 have latch heads 26 disposed in an outward radial direction, adapted to engage a corresponding formation I have shown an annular groove 27 to receive the heads 26, since the groove may be produced with facility and will present the necessary depressions at diametrically opposite points to receive the latch heads 26.

The described arrangement of the tongue and groove connection, and the latching means on the tubular head and tubular tool permit of the convenient and quick interchange of tools of different character. In Fig. 5 the tool is shown with a Zone 20' in the form of a coarserasp and a zone 20 at the opposite end in the formof a finer rasp. In Fig. 6 is illustrated a tubular tool 20 having an exterior peripheral working face corresponding with a mill file. The work ing faces of the tubular tools may be variously formed to correspond with difierent rasps and files,.and the substitution of one tool for another may be quickly effected, whereby to employe the tools in succession.

At the end opposite the head 19 the tubuon the tool 20 at the interior;

there being shown in the V lar body is enlarged to form a cylindrical housing 28, having a front cap 28 which may be detachably secured by screws 28". Extending into the housing 28 through the cap 28 is a drive element 29, which is secured to a drive shaft 30, which may be driven in any suitable manner. The shaft 30 in practice, preferably will be a flexible shaft. The drive element 29 is formed at its inner end within the housing 28 with a friction clutch element 29. A mating friction clutch element 31 is slidably fitted on the adjacent end of the spindle 11 within thehousing 28, the slidable clutch element engaging a rib or feather 82 on the said spindle. To manually shift the sliding clutch element 82 to make or break the driving connection between the spindle and the drive element 29, a clutch fork or shoe 33 is received betweenflanges 31* on the sliding clutch, and has a stem 3% extending laterally through tne exterior of the housing 28 and provided with a head 35 for convenient movement of the clutch fork. The shank 34 extends through a slot 35 in the housing 28,

said slot presenting end members parallel I alsoa lateral movement with each other and anoblique intermediate connecting member, as clearly shown in Fig. 2. The form of the slot permits a movement of the shank 3st and clutch fork 33 longitudinally ofthe spindle, while giving to position the shank 3st in either of the parallel ends of the slot 36, and prevents accidental axial displacement of the sliding clutch member.

To lubricate the spindle 11 an oil hole 37 is formed in the body 10 near the front end, and an oil hole38 in said body near the opposite end. A third oil hole 39 may be'provided in the cap 28 in the housing 28, to lubricate the drive element 29 which has a bearing in said cap.

By the described construction the operation of properly trimming a hoof may be performed expeditiously and with convenience, and without the necessity of employing the usual horse rasp and hoof nippers. The provision of the different rasp efliciency in the use of the tool.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent:

1. In a device of the character described, a

tubular body, a spindle revolubly mounted inthe body, means for establishing connection between the spindle and actuating means, a tubular head on the spindle at one end, a tubular tool removably fitting said head and having an exterior peripheral working surface, and co-acting fastening elements on the head and on the interior of the tubular tool, said tool having an open front end affording access to the said fastening elements.

2. In a device of the character described, a spindle, means to connect the spindle with the drive means, a tubular head on the spindle, a tubular tool slidably fitting said head exteriorly, the said head and tool'having a tongue and groove connection, and a longitudinally ranging spring latch secured to said head on the interior thereof and detachably engaging the tubular tool.

3. In a device of the character described, a revoluble spindle, means to connect the spindle with the drive aneans, the said spindle having a tubular head, a tubular tool slidable-on the tubular head exteriorly,

and a longitudinally ranging spring latch secured to said head at the interior thereof tubular tool.

4. In a device of the character described, a tubular body enlarged at one end to form a housing, a drive element extending into said housing and provided therein with a clutch member, a spindlejterminating at one end in the housing co-axial with the drive element, means at the opposite end of the spindle to support a. tool, a clutch member slidable on the spindle within the housing to engage and disengage the clutch member on the drive element, a laterally projecting operating device on' the said slidable clutch member, the said housing having a slot presenting end members approximately parallel, and an intermediate, oblique member connecting the end members of the slot, the clutch-operating device extending outward to the said slot. 7

5. In a device of the character described, a tubular body having a housing at one end, a spindle revoluble in said body, the spindle extending at one end into the said housing and having means at the opposite end to carry a tool, a drive element extending into the housing oppositely to and coaxial with the spindle, the said drive element having a clutch member, a slidable clutch member on the spindle, and a laterally projecting device on the slidable clutch member, said device extending laterally through the housing and spindle, said flange of the nut defining a In testimony whereof I have ore of less diameter than the body of the name to this specification in the nut, there being an opposed cone 011 the fortwo subscribing Witnesses.

signed my presence of Ward end of the body, sald cones co-acting JOSEPH SUMNER WOODS.

Copies of this patent may be obtained for five cents each by with the said groove to form a ball race and Witnesses:

a lock nut for the cone nut, at the inner end FRANK HIGH, of the latter. 7 DUNCAN.

, addressing the Commissioner of Patents,

Washington, I). G. 

